In this paper, Pt nanoclusters are firstly decorated on the surface of two dimensional (2D) g-C₃N₄ nanosheets. Furthermore, 1D CdS nanowires are introduced to form the heterojunction of g-C₃N₄/CdS. The as-prepared Pt/g-C₃N₄/CdS shows 7.4 times improved electrocatalytic performance on methanol oxidation under visible light (>420 nm) irradiation compare to dark condition. Moreover, the stability of corresponding electrode is significantly improved by evaluating on chronoamperometric and chronopotentiometry curves. The synergistic effects of photo- and electro-catalysis together with the efficient charger separation in the heterojunction of g-C₃N₄/CdS contribute to the above improvements. The present studies provide an effective pathway to design a heterojunction as the photo-activated support in the application of direct methanol fuel cell.

本文首先在二维（2D）gC ₃ N ₄纳米片的表面上装饰了Pt纳米簇。此外，引入一维CdS纳米线以形成gC ₃ N ₄ / CdS的异质结。所制备的Pt / gC ₃ N ₄ / CdS与可见光相比，在可见光（> 420 nm）照射下对甲醇氧化的电催化性能提高了7.4倍。此外，通过对计时电流法和计时电位法曲线进行评估，可以显着提高相应电极的稳定性。在gC ₃ N ₄的异质结中，光催化和电催化的协同效应以及有效的电荷分离/ CdS有助于上述改进。本研究提供了设计异质结作为光活化载体在直接甲醇燃料电池应用中的有效途径。